The tautomeric state of N(4)-hydroxy- and of N(4)-amino-cytosine derivatives.
D000588:Amines; D055598:Chemical Phenomena; D002621:Chemistry; D003596:Cytosine; D009153:Mutagens; D011743:Pyrimidines
D000588:Amines; D009153:Mutagens; D011743:Pyrimidines; D003596:Cytosine